Pump-cylinder attachment.



' e. E. OKELL.

PUMP CYLINDER ATTACHMENT. APPLICATION FILED FEB. 29.1916.

Patented May 8,1917.

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ENTTED STATES PATEET @FFEQE.

GEORGE E. OKELL, OF LOS ANGELES, CALIFQRNIA, ASSIGN'OR TO (MISS) CORA 1V1. LANE, 015 LOS ANGELES, CALIFORNIA.

PUMP-CYLINDER ATTACHMENT.

Specification of Letters Patent.

Patented May 8, 1917.

. Application filed February 29, 1916. Serial No. 81,125.

To all whom it may concern:

Be it known that I, GEORGE E. OKELL, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Pump-Cylinder Attachments, of which the following is a specification.

This invention relates to that class of pump cylinder attachments which can be added to cylinders used for single acting deep well pumps.

It is an object to provide means whereby the cylinder without alteration'thereof may be used as a double acting pump, thereby increasing the capacity without the necessity of changing the stroke, speed, or nature of the pumping head or jack, thus a single acting pump outfit may be changed to double a the output of water without any alterations in the cylinder.

Another object is to provide a draw valve cage which is made so that it can be withdrawn through the inside of a pump pipe at the will of the operator without the necessity of taking out either the discharge pipe or cylinder body.

A further object is to provide a valve cage head which is self contained and may be withdrawn from its position without disassembling the pump..

I have illustrated an embodiment of my invention in the accompanying drawing, in which:

Figure 1 is a vertical sectional view partly in elevation of a double acting hollow piston rod pump including my improved attachmerit.

Fig. 2 is anelevation partly in section of my improved drawvalve cage.

Fig. 3 is a plan view as seen on the line 33 of Fig. 2.

Referring more particularly to Fig. 1, 4 indicates a pump cylinder of the type commonly supplied for single acting pumps, and is provided at its lower end with a coupling 5 adapted to be connected to a suction pipe. Coupling 5 is formed with a valve seat 6 and a reciprocating valve 7. The upper end of the cylinder 4 is threaded and is herein shown as attached to a reducer 8. The cylinder and foot valve shown is merely representative of a single acting cylinder and foot valve of various well known types, and it does not form a part of my invention.

My invention resides in the draw valve cage which forms a head for the upper portion of the pump barrel. The head comprises a eylindriealshell 9 which is designed to fit within the reducer 8 and rest upon a tapered seat 10 at the upper end of the reducer, and a shoulder 11 at the-lower end. The shell 9 has a spider '12 at its lower portion providing an opening for liquid to pass between the-interior of the shell and the upper portion of the pump cylinder. At the upper end of the shell a tapered shoulder 13 is formed which cooperates with the tapered seat 10 in the reducer. A closure wall 14 at the upper end of the shell has a series of ports 15 arranged in the form of a circle. Extending axially of the shell is a guide sleeve 16 which is extended beyond the upper end of the shell as indicated at 17 and is formed with a stuffing box 18 having the usual gland 19. e The guide sleeve 16 is for the purpose of guiding a hollow pump rod 20 and the-sleeve is secured to the spider 12 and the closure plate 14. In the wall of shell 9 are formed threaded openings 21, the number of these openings is not a material feature of the invention. One or more may be used. j Formed in the reducer 8 are corresponding openings 22 arranged to register withthe openings inthe shell 9.

Threaded into each ofthe openings 21 is a valve seat 23 inthe form of a spider having a hub 24: and radiating arms. The hub 24 is provided with a threaded aperture 25 in which is secured a valve guide pin 26. Slidingly mounted upon" the valve pin 26 and cooperating with the valve seat 23 is a valve disk 27 which is normally held upon its .seat by a spiral spring 28, the latter abutting a head .29 secured to the valve pin 26. A flat puppet valve is thereby formed which works. horizontally. This type of valve oifersthe least resistance to water upon the upstroke and does not hammer the seat of the valve cage, being lighter in weight than ball valves of the same area. It also allows much more spacing between the outer wall and inner wall of the valve cage for the water to pass freely on the upstroke of the pump piston, there being very little to impede the passage of water through the space.

At the bottom end of the cage a bayonet joint is formed consisting of a vertical slot 30 communicating with a horizontal slot 31. Studded in the wall of the casing re ducer is a pin 32 arranged to rest in the horizontal slot 31 'when the valve cage is in position as shown in Fig. 1. The closure plate 14 acts as a valve seat for an annular valve 33 which is guided upon the extension 17 of the pump guide sleeve. It forms a discharge valve for the upper end of the pump.

Secured to the pump rod 20 which is open at the lower end and also is provided with the usual valved opening at the upper end, not shown, is a piston comprising cup leathers 3-1 and 35 held in position upon the pump rod 20 by means of follower disks 36 and 37, the latter being secured to'the piston rod.

The reducer S is fitted andthreaded for I a regular size piping or casing on the upper end of larger diameter than the pump cylinder. Packing box 18'secures the valve cage to the pump rod with sufficient tightness so that by rotating the red the valve cage may be rotated. Assuming that the head is in position and it is desired to pull the valve cage, the pump rod is rotated so that the pin 32 in the reducer registers with the vertical slot 30. By pulling the pump rod the valve cage may be lifted as the pin slides. out of the vertical slot 30. The valve cage head is self contained, and all of the parts which include the upper valves will be lifted with it. If it is desired to lift the footvalve the usual Gar-butt rod construction may be employed. This, however, is not material to my invention.

To replace the valve cage the latter is lowered into the reducer head throughv the discharge head from the surface until it rests upon pin 32. After it is in this position, it-is turned around on the pin until the'same comes in line with the vertical slot in the valve cage. Then the cage is lowered farther to the depth of the vertical slot at which point the cage rests upon its permanent seat in the casing reducer. The cage is .then turned around the distance of the length of the horizontal slot until-the pin abuts the end thereof. This position is so arranged that the position of the cage brings the valve seats directly opposite the correspondingapertures in the wall of the Copies of this patient may be obtained for contained within the cylinder above the piston will be discharged through the valve "ports 15,- the valve disk 33 being lifted thereon. Upon the down stroke of the piston the valve disk 33 seats and the puppet valve disks 27 open admitting water to the upper portion of the cylinder. Water is 7 taken in and discharged from the lower end of the cylinder as is common with hollow piston pump rods.

What I claim is: p v

1. In combination with a reducer having a'cylindrica'lbore, a shoulder adjacent an end thereof, and intake ports in its wall communicating with said bore; a draw head comprising a cylindrical shell slidably disposed in the bore abutting said shoulder having openings registering with said intake ports, intake valves within said shell detachably mounted in said openings, a piston guide-shell axially disposed in said cylindrical shell, a dischargevalve disposed at the upper end of said cylindrical shell;

and means for detachably locking said cylindrical shell to said reducer.

2. In combination with a reducer having a cylindrical bore, a shoulder adjacent an communicating with said bore; a' draw head comprising a cylindrical shell slidably disend thereof, and intake ports. in its wall j oint for locking said'cylindrical shell to have hereunto subscribed my name this 1st day of February, 1916.

GEORGE E. 'OKELL.

five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

